The modernization of General education currently underway in Kazakhstan brings to the fore the tasks of developing the child's personality, abilities and aptitudes, and revealing the creative potential of the individual, starting from the moment of entering the first grade of secondary school. Therefore, a modern primary school teacher must implement training, development and education based on knowledge of the individual characteristics of the younger student, be able to manage the process of constant change of the student and ensure his ascent to a higher level of development, carry out research pedagogical search, solving the problems of the child's personality formation on a scientific basis.

This article discusses diagnostic methods, features of diagnostic objects, areas of its application, objective methods of data collection and analysis during diagnostics, problems of improving the measurement of the quality of written and test works.